.content-box{
    width: 1200px;
    margin: 155px auto 60px;
}
.content-box .aside{
    float: left;
    width: 300px;
}
.content-box .aside li{
    width: 100%;
    margin-bottom: 27px;
    cursor: pointer;
}
.content-box .aside li .item-title{
    position: relative;
    margin-bottom: 13px;
}
.content-box .aside li .item-title::before{
    content: '';
    position: absolute;
    top: 4px;
    left: 0;
    width: 4px;
    height: 20px;
    visibility: hidden;
    background-color: #1E96D5;
}
.content-box .aside li.active .item-title{
    font-weight: 700;
    padding-left: 14px;
    color: #1E96D5;
}
.content-box .aside li.active .item-title::before{
    visibility: visible;
}
.content-box .aside li .item-img{
    width: 240px;
    height: 124px;
    background-color: #e6e6e6;
}
.content-box .tab-bd{
    float: left;
    width: 900px;
}
.text-content{
    font-size: 16px;
    line-height: 25px;
}
.text-content h3{
    font-weight: 600;
    margin-bottom: 10px;
}
.text-content p{
    margin-bottom: 10px;
}
.tab-bd .tab-bd-content{
    display: none;
}
.tab-bd .tab-bd-content.tab-content-show{
    display: block;
}